Powering a Gateway¶
Power options Gateway E32, S32 and S32-LR¶
Service jack¶
If your boiler has a service jack, just connect the Gateway with the 3,5mm jack cable. The service jack has pins for both the EMS bus and an additional power supply for peripherals. You do not need to add an external power supply in this case.
Splitting service jack power¶
If you have f.i. a KM50 module already on the service jack, then you can split the jack connector with a 3,5mm audio splitter. This method is not recommended and it may not always work, but you can try. Use a high quality connector type splitter and not one with long cables attached as these cables are intended for audio and thus have very thin wires inside. If the KM50 or the Gateway does not work via the splitter cable, you need to remove the splitter and connect the Gateway to the BUS terminal and add an external power supply.
External power supply¶
If your boiler does not have a service jack, or it does but you want to mount the Gateway elsewhere, you need to use an external power supply. A suitable power supply is optional when buying a Gateway. If you want to use your own, see the specifications in the table below.
USB port¶
Although the enclosure is not designed for this, Gateway models S32 and S32-LR can also be powered from the internal USB port. The E32 cannot be powered from this port (if available). Remove the side piece of the enclosure to make use of the USB port.
Power requirements external DC power supply¶
If you want to use your own power supply with a Gateway, it needs to have the following minimum requirements:
Parameter |
Specification |
|---|---|
Voltage output |
5,5V-13V DC |
Current output |
150mA or more |
Plug |
DC barrel jack 5,5mm |
Polarity |
center pin positive |
It’s recommended to use a high quality power supply. One that was included with an old router for instance will work well. Do not use a cheap power supply from Aliexpress or Ebay, as they may introduce noise on the EMS bus.